However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
From a career standpoint, the term âbiologistâ can have many meanings. As a biologist, you might study plants, animals, people or a particular environment. You could work in marine biology, wildlife biology or biochemistry, travel to the Brazilian rain forest to study biological compounds or work in a clinical laboratory as a microbiologist.
Marine biologists need at least a bachelor's degree in marine biology, and many continue on to receive master's and doctoral degrees in marine biology, according to the Bureau of Labor Statistics.ndergraduate Coursework. To become a marine biologist, students must select a major in marine biology or an equivalent. To achieve a bachelor of science in marine biology, students study physics, genetics, oceanography, chemistry and general marine biology.